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2006•Chinese Journal of Spectroscopy LaboratoryRequires access

Synthesis of o-Hydroxy-Benzenediazoaminoazobenzene and Its Color Reaction with Cadmium

Yue Liu

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Abstract

The o-hydroxy-benzenediazoaminoazobenzene(o-HDAA) was synthesized and its color reacts with cadmium was investigated.In the presence of triton X-100 and in the Na2B4O7-NaOH medium of pH 10,o-HDAA forms a 1∶3 red complex with Cd(Ⅱ).The apparent molar absorptivity of complex is 1.88×105L·mol -1·cm -1 at 516nm.Beer's law is well obeyed in the range of 0? ?0.0μg/25mL for cadmium.The method has been applied to the direct determination of cadmium in waste water with satisfactory results.

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What this paper is about

The o-hydroxy-benzenediazoaminoazobenzene(o-HDAA) was synthesized and its color reacts with cadmium was investigated.In the presence of triton X-100 and in the Na2B4O7-NaOH medium of pH 10,o-HDAA forms a 1∶3 red complex with Cd(Ⅱ).The apparent molar absorptivity of complex is 1.88×105L·mol -1·cm -1 at 516nm.Beer's law is well obeyed in the range of 0? ?0.0μg/25mL for cadmium.The method has been applied to the direct determination of cadmium in waste water with satisfactory results.

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Available abstract

The o-hydroxy-benzenediazoaminoazobenzene(o-HDAA) was synthesized and its color reacts with cadmium was investigated.In the presence of triton X-100 and in the Na2B4O7-NaOH medium of pH 10,o-HDAA forms a 1∶3 red complex with Cd(Ⅱ).The apparent molar absorptivity of complex is 1.88×105L·mol -1·cm -1 at 516nm.Beer's law is well obeyed in the range of 0? ?0.0μg/25mL for cadmium.The method has been applied to the direct determination of cadmium in waste water with satisfactory results.

Key concepts: Molar absorptivity, Cadmium, Color reaction, Chemistry, Nuclear chemistry, Molar ratio, Spectrophotometry, Inorganic chemistry

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